Rapid combined large-scale lattice spanning
The combined fast and safe crossing frame of holding pole makes high-altitude power transmission and transformation construction efficient and economical.
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Applicable industry
Applications
Key innovations
The innovation of this technology lies in that it uses existing tower holding poles to quickly assemble a combined large-scale lattice spanning frame through mechanization to replace the traditional construction method. It solves the difficult problem of crossing elevated roads and railways, and significantly improves construction safety and efficiency.
Potential economic benefits
Reduce construction costs, improve construction efficiency and safety, reduce potential risks and use costs, and realize material reuse, with significant comprehensive economic benefits.
Potential climate benefits
This innovative construction method significantly reduces energy consumption and carbon emissions for the production of new materials by repeatedly using the holding pole. Mechanized rapid assembly shortens the construction period and directly reduces the fuel consumption of construction machinery. High stability reduces construction damage and repair needs, and avoids additional resource and energy consumption.
Solution supplier
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State Grid Shanghai City Electric Power Company
State Grid Shanghai City Electric Power Company provides Shanghai with a safe and reliable power supply and ensures urban operation and development.
Shanghai，China
Solution details
- field of science and Technology
The construction of overhead power transmission and transformation lines is becoming more and more frequent across elevated highways, elevated railways, etc., and the height and requirements of the crossing are becoming higher and higher. In the past, construction methods such as erecting bamboo crossing frames, steel pipe crossing frames, and live crossing frames have gradually failed to meet the needs. There is an urgent need to develop a new crossing method and related tools that can be constructed quickly and have low requirements for pulling wires. We integrated various crossing methods and existing conditions, and adopted a new method of assembling holding poles into crossing frames. That is to process the connecting pieces, assemble the existing tower holding pole sections into the required structure, and use a crane to assemble them one by one in a similar manner to building blocks to achieve the required width and height, and form a combined large-scale lattice spanning frame., meet construction needs. - Main technological innovation content
This achievement is an innovation in construction method. The main highlights are: it makes full use of the existing holding pole, which can be used repeatedly and reduces construction costs; it can use mechanized rapid assembly, which improves construction safety and speed; it has strong self-stability and has little dependence on the pulling wire, which reduces the cost of possible damage to underground pipelines; the holding pole has high strength, few and reliable connections, reducing the risk of construction dispersion; The holding pole has strong load resistance, which achieves the protection ability against single-phase disconnection fault conditions in this gear and improves the safety of the crossed object. - intellectual property
Utility model patent: "A Rapidly Combined Lattice Crossing Frame" Patent No.: ZL2013 2 0646202.4;
Utility model patent: "A 500 kV substation 220 kV crossing frame system for engineering line erecting" Patent No.: ZL2014 2 0235208.7;
Utility model patent: "A Safe and Reliable Crossing Frame" Patent No.: ZL2014 2 0229758.8;
Utility model patent: "A pole grid crossing frame for both sides of highway" Patent No.: ZL2014 2 0243058.4;
Utility model patent: "A Four-loop Pulley Hanging Point Crossing Frame on the Same Tower" Patent No.: ZL2014 2 0228587.7; - application and promotion
- The 220kV outgoing line project of the 500kV Xinyu (Southwest of the City) Substation undertaken by Shanghai Power Transmission and Transformation Engineering Company needs to cross the elevated section of the S32 Expressway. The crossing point is 16.4 meters high, the road surface is 30 meters wide, and the intersection angle is about 60 degrees. 600 and 700 cross-section holding poles are used to assemble a spanning frame for spanning, with a height of 26.9 meters.
- Bid 18 of the 1000 kV AC ultra-high voltage line project of the Huainan-Nanjing-Shanghai Project undertaken by Shanghai Power Transmission and Transformation Engineering Company requires the demolition of two single-circuit 500kV line corridors, one of which is converted into dual circuits on the same tower, and the other A new UHV 1000kV+500kV four circuits on the same tower are built. To cross the Beijing-Shanghai high-speed railway and the Shanghai-Nanjing intercity railway at the same time in the first gear, two demolitions and two new constructions will be required to cross the high-speed railway four times, all requiring night construction and also crossing the navigable river. Using this crossing frame, a demolition construction across the high-speed railway has been completed, with a height of 29.7 meters.
The rapid combined large-scale lattice crossing frame developed this time is an innovation to adapt to the situation that the objects being crossed are getting higher and higher and the influence is getting higher and higher during line construction. It improves crossing safety and reduces use costs. It is worth promoting and using. This technology has large expansion application space, such as being used for higher spans, being used as a temporary straight tower during emergency repair, etc.
Last updated
11:21:51, Nov 04, 2025
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